#18483: DIR-825 running CC r43485 - WIFI cannot handle IRQ 40
-----------------------+------------------------
Reporter: papaj0e | Owner: developers
Type: defect | Status: new
Priority: normal | Milestone:
Component: packages | Version: Trunk
Resolution: | Keywords:
-----------------------+------------------------
Comment (by papaj0e):
And once again after two more days of uptime:
{{{
[521684.990000] ath: phy0: Failed to stop TX DMA, queues=0x00a!
[557188.050000] irq 40: nobody cared (try booting with the "irqpoll"
option)
[557188.050000] CPU: 0 PID: 9832 Comm: kworker/u2:0 Not tainted 3.14.26 #1
[557188.050000] Workqueue: phy0 ath_reset_work [ath9k]
[557188.050000] Stack : 00000001 ffffffff 81d21e00 80301ab8 80356f68
00000028 00000000 00000000
[557188.050000] 80340000 80305370 80305384 802a2d98 00002668
80206bd0 82ecb210 00000000
[557188.050000] 80310fe8 82df5b84 82df5b84 802a2d98 00000000
80206698 00000006 00000000
[557188.050000] 00000005 80238e18 00000000 00000000 00000000
00000000 00000000 00000000
[557188.050000] 70687930 00000000 00000000 00000000 00000000
00000000 825c6a00 825c6900
[557188.050000] ...
[557188.050000] Call Trace:
[557188.050000] [<80248980>] show_stack+0x48/0x70
[557188.050000] [<800a6cb8>] __report_bad_irq.isra.7+0x44/0xf8
[557188.050000] [<801daa04>] note_interrupt+0x224/0x2d8
[557188.050000] [<80160b14>] handle_irq_event_percpu+0x1b8/0x1ec
[557188.050000] [<80160938>] handle_irq_event+0x3c/0x60
[557188.050000] [<80160c28>] handle_level_irq+0xe0/0xf8
[557188.050000] [<80153b38>] generic_handle_irq+0x28/0x44
[557188.050000] [<80153b38>] generic_handle_irq+0x28/0x44
[557188.050000] [<8011c4f0>] do_IRQ+0x1c/0x2c
[557188.050000] [<80060830>] ret_from_irq+0x0/0x4
[557188.050000] [<804a85a0>] ieee80211_stop_queues_by_reason+0x8c/0xb0
[mac80211]
[557188.050000] [<832c2370>] ath9k_deinit_device+0x27c/0x88c [ath9k]
[557188.050000] [<832c4480>] ath9k_calculate_summary_state+0x550/0x648
[ath9k]
[557188.050000] [<8010dec0>] dequeue_task_fair+0x0/0x12c
[557188.050000]
[557188.050000] handlers:
[557188.050000] [<832c3864>] ath_isr [ath9k]
[557188.050000] Disabling IRQ #40
}}}
cat /proc/interrupts
{{{
CPU0
3: 691949 MIPS ehci_hcd:usb1
4: 232258906 MIPS eth0
5: 495000517 MIPS eth1
7: 57494081 MIPS timer
11: 125 MISC serial
14: 0 MISC ohci_hcd:usb2
40: 329600000 AR71XX PCI ath9k
41: 53448736 AR71XX PCI ath9k
ERR: 0
}}}
Last two times the router crashed it has been lightly loaded and have
about half the RAM available:
{{{
root@OpenWrt:~# cat /proc/meminfo
MemTotal: 61264 kB
MemFree: 22452 kB
MemAvailable: 37016 kB
Buffers: 2028 kB
Cached: 13208 kB
SwapCached: 0 kB
Active: 10160 kB
Inactive: 7568 kB
Active(anon): 2524 kB
Inactive(anon): 1032 kB
Active(file): 7636 kB
Inactive(file): 6536 kB
Unevictable: 0 kB
Mlocked: 0 kB
SwapTotal: 0 kB
SwapFree: 0 kB
Dirty: 0 kB
Writeback: 0 kB
AnonPages: 2512 kB
Mapped: 1616 kB
Shmem: 1064 kB
Slab: 11176 kB
SReclaimable: 4088 kB
SUnreclaim: 7088 kB
KernelStack: 336 kB
PageTables: 288 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 30632 kB
Committed_AS: 6728 kB
VmallocTotal: 1048372 kB
VmallocUsed: 1880 kB
VmallocChunk: 1023528 kB
}}}
--
Ticket URL: <https://dev.openwrt.org/ticket/18483#comment:17>
OpenWrt <http://openwrt.org>
Opensource Wireless Router Technology
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